279244168392961 has 2 divisors, whose sum is σ = 279244168392962. Its totient is φ = 279244168392960.

The previous prime is 279244168392913. The next prime is 279244168392991. The reversal of 279244168392961 is 169293861442972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276472293031936 + 2771875361025 = 16627456^2 + 1664895^2 .

It is a cyclic number.

It is not a de Polignac number, because 279244168392961 - 2¹⁵ = 279244168360193 is a prime.

It is not a weakly prime, because it can be changed into another prime (279244168392991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139622084196480 + 139622084196481.

It is an arithmetic number, because the mean of its divisors is an integer number (139622084196481).

Almost surely, 2^{279244168392961} is an apocalyptic number.

It is an amenable number.

279244168392961 is a deficient number, since it is larger than the sum of its proper divisors (1).

279244168392961 is an equidigital number, since it uses as much as digits as its factorization.

279244168392961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564350976, while the sum is 73.

The spelling of 279244168392961 in words is "two hundred seventy-nine trillion, two hundred forty-four billion, one hundred sixty-eight million, three hundred ninety-two thousand, nine hundred sixty-one".